20489709999

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{157}}^1\times {\mathrm{28867}}^1$

素因数の和:29175

約数の個数: 32

約数和(自身を含む): 30213017856

約数和(自身を除く): 9723307857

約数列:

[1, 3, 11, 33, 137, 157, 411, 471, 1507, 1727, 4521, 5181, 21509, 28867, 64527, 86601, 236599, 317537, 709797, 952611, 3954779, 4532119, 11864337, 13596357, 43502569, 49853309, 130507707, 149559927, 620900303, 1862700909, 6829903333, 20489709999]

約数ペア:

[(1, 20489709999), (3, 6829903333), (11, 1862700909), (33, 620900303), (137, 149559927), (157, 130507707), (411, 49853309), (471, 43502569), (1507, 13596357), (1727, 11864337), (4521, 4532119), (5181, 3954779), (21509, 952611), (28867, 709797), (64527, 317537), (86601, 236599)]